package com.fzn.realm;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

/**
 * @author fzn
 * @date 2022/3/18
 * @apiNote
 *    自定义Realm实现 将认证|授权数据的来源转为数据库的实现
 */
public class CustomerRealm extends AuthorizingRealm {
    /**
     * 授权
     * @param principals
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        return null;
    }

    /**
     * 认证
     * @param token
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        // 在token中获取用户名
        Object principal = token.getPrincipal();
        System.out.println(principal);
        // 根据身份信息使用jdbc mybatis查询相关数据库
        if ("xiaochen".equals(principal)) {
            // 参数1 正确用户名    参数2返回数据库正确的密码   参数3 提供当前realm的名字 this.getName()
            SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(principal,"123",this.getName());
            return simpleAuthenticationInfo;
        }
        return null;
    }
}
